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US3792977A Expired / Lapsed US ⏱️ 0.0 years remaining

Water-in-fluorocarbon emulsion

Assignee: 3M Co
•
Filing: 1972-05-15
•
Granted: 1974-02-19
•
Expires: 1992-05-15
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Abstract

Abstract Water is dispersed in inert, non-polar fluorocarbon with a nonionic emulsifier which is soluble in the water and fluorocarbon and contains a hydrophobic fluoroaliphatic portion and a hydrophilic solubilizing portion, to provide a water-influorocarbon emulsion useful in the dyeing of textiles.

Inventors

  • 👤 R Guenthner

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 21:52
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; D06P1/44; D06P1/60; D06P1/607; D06P1/613; D06P1/922; D06P1/924; Y; Y10; Y10S; Y10S8/00; Y10S8/907; Y10S8/92; Y10S8/922

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 34 words
The emulsion of claim 1, wherein the fluorine content of said emulsifier is 30 to 60 weight percent, said emulsifier being soluble in said fluorocarbon to the extent of at least 0.01 weight percent.
Claim 2
Dependent Claim 25 words
The emulsion of claim 2, wherein said hydrophilic moiety is poly(oxyalkylene) wherein the number of oxyalkylene units is in the range of 1 to 25.
Claim 3
Dependent Claim 15 words
The emulsion of claim 3, wherein said oxyalkylene units are oxyethylene, oxypropylene, or mixtures thereof.
Claim 4
Dependent Claim 19 words
The emulsion of claim 1 further comprising a dye disperSed or dissolved in the aqueous phase of said emulsion.
Claim 5
Dependent Claim 10 words
The emulsion of claim 1 wherein said emulsifier is C8F17SO2N(C2H5)(C2H4O)3H.
Claim 6
Dependent Claim 25 words
In a method of dyeing textiles with a water-fluorocarbon medium containing dye, the improvement comprising using as the medium the water-in-fluorocarbon emulsion of claim 5.
Claim 7
Dependent Claim 10 words
The method of claim 7, wherein said emulsifier is C8F17SO2N(C2H5)(C2H4O)3H.
Claim 8
Dependent Claim 298 words
A water-in-fluorocarbon emulsion stabilized with a non-ionic emulsifier containing fluoroaliphatic, non-polar, hydrophobic moiety and non-ionic, hydrophilic, solubilizing moiety, said fluorocarbon being a stable, inert, non-polar, oleophobic, hydrophobic, highly fluorinated liquid having a boiling range between 55* and 200*C. and containing 60 to 76 weight percent carbon-bonded fluorine and less than about 5 atom percent hydrogen or chlorine on the basis of said carbon-bonded fluorine, said fluorocarbon having 6 to 25 carbon atoms and a skeletal chain which is straight chain, branched, cyclic or combinations thereof and can contain catenary oxygen or trivalent nitrogen hetero atoms, or both kinds of said hetero atoms, said hetero atoms being bonded only to carbon atoms, said fluoroaliphatic moiety of said emulsifier containing 40 to 78 weight percent carbon-bonded fluorine and having 3 to 20 carbon atoms, said fluoroaliphatic moiety being straight chain, branched chain, cyclic, or combinations thereof and having at least 75 percent of the non-catenary carbon valence bonds attached to fluorine atoms and up to 25 percent of said valence bonds being bonded to non-ionic, non-polar substituents, and wherein the skeletal chain of said fluoroaliphatic moiety can contain catenary oxygen or trivalent nitrogen hereto atoms, or both kinds of said hetero atoms, said hetero atoms being bonded only to carbon atoms, said hydrophilic moiety of said emulsifier being poly(oxyalkylene) wherein the number of oxyalkylene units is in the range of 1 to 25 and said oxyalkylene units are oxyethylene or a mixture of oxyethylene and oxypropylene, said hydrophilic moiety having a sufficient degree of hydrophilicity to render said emulsifier soluble in water to the extent of at least 0.1 weight percent, said emulsifier being soluble in said fluorocarbon to the extent of at least 0.01 weight percent, and the fluorine content of said emulsifier being 30 to 60 weight percent.
Claim 9
Dependent Claim 19 words
The emulsion of claim 9 further comprising a dye dispersed or dissolved in the aqueous phase of said emulsion.
Claim 10
Dependent Claim 25 words
In a method of dyeing textiles with a water-fluorocarbon medium containing dye, the improvement comprising using as the medium the water-in-fluorocarbon emulsion of claim 10.

References Cited (Backward Citations)

US3129053A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-02-18 1977-08-20 1978-02-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-02-18 1981-08-20 1982-02-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-02-18 1985-08-20 1986-02-19 $7700.00 Window Closed / Lapsed

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